overlord season 4 zanac death

They are portrayed as fearsome undead soldiers, with great combat skills.

I'm not sure specifically as there could be many novels with such a title. Generally, it might involve a death knight who has some sort of lordship or power. Maybe it's about his battles, his rise to power, or his conflicts with other forces in a fantasy world.

No, it's not. Overlord Season 3 has a mix of main plot developments and some supplementary side stories.

The Death Knights in the Overlord novel are powerful undead warriors. They are often depicted as having great physical strength and being highly resistant to damage. They are loyal servants of the overlord and play important roles in battles and the overall power structure within the story.

Since I haven't read it, I can't say for sure. But it might have the death knight himself as a main character, of course. There could also be characters like his loyal servants, perhaps other powerful dark mages or warriors who serve him or oppose him.

I think it ends in Volume 9 of the Overlord novels.

It ends at a specific chapter, but I can't recall exactly. You might want to check some manga forums or dedicated Overlord fan sites for the precise details.

The light novel that serves as the basis for Overlord Season 4 is the ongoing series by Kugane Maruyama. It has a rich and complex storyline that the anime adaptation tries to capture faithfully.

The ending of season 3 of Overlord corresponds to a specific point in the light novel series. But exactly which one might vary depending on the adaptation and how closely it follows the original source.